
https://wwwqa.goldmansachs.com/insights/pages/gs-research/dual-action-of-capital-markets-transforms-net-zero-cost-curve/the-dual-action-of-capital-markets-transforms-the-net-zero-cost-curve.pdf

https://theconversation.com/bulgaria-is-joining-the-euro-in-january-and-not-everyone-is-pleased-258626

https://www.google.com/url?esrc=s&q=&rct=j&sa=U&url=https://www.imf.org/-/media/Files/Publications/WP/2022/English/wpiea2022187-print-pdf.ashx&ved=2ahUKEwiDqLXjvqP9AhXwiP0HHSdXC0UQFnoECAQQAg&usg=AOvVaw3YLIKX-UVfKoiGtiG_7NjZ